WO2012013438A1 - Procédé de fabrication d'une bande pour une machine à fabriquer du matériau en bande, en particulier du feutre de presse - Google Patents

Procédé de fabrication d'une bande pour une machine à fabriquer du matériau en bande, en particulier du feutre de presse Download PDF

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Publication number
WO2012013438A1
WO2012013438A1 PCT/EP2011/060892 EP2011060892W WO2012013438A1 WO 2012013438 A1 WO2012013438 A1 WO 2012013438A1 EP 2011060892 W EP2011060892 W EP 2011060892W WO 2012013438 A1 WO2012013438 A1 WO 2012013438A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
material layer
fiber material
producing
press felt
Prior art date
Application number
PCT/EP2011/060892
Other languages
German (de)
English (en)
Inventor
Uwe Köckritz
Original Assignee
Voith Patent Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2012013438A1 publication Critical patent/WO2012013438A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts

Definitions

  • the present invention relates to a method for producing a tape which can be used, for example, as a press felt in the press section of a paper machine.
  • Such press felts take up the web material to be produced, for example paper, or the starting material therefor and transport it in a press section through press nips.
  • liquid generally water
  • the water emerging from the web material to be produced passes into the interior volume region of the press felt and is discharged through it.
  • the fibers which may have a length of up to a few centimeters, extend substantially in the plane defined by this layer, ie in the band longitudinal direction, which generally also corresponds to the machine direction, or in the transverse direction of the band, which in general the transverse machine direction corresponds, or obliquely thereto.
  • the fibers extend substantially orthogonal to the thickness direction of the respective fiber material layer or of the entire band or press felt and thus also substantially orthogonal to the direction in which the liquid emerging from the web material to be produced is to pass through the band.
  • this object is achieved by a method for producing a strip for a machine for producing sheet material, in particular press felt, comprising the measures:
  • a structure is achieved in which, due to the internal structure of a nonwoven stitched fabric, the fibers of this layer extend not only substantially in the plane spanned by the layer, but also in the thickness direction. This means that an increasingly thicker pore structure is present along the fibers running in this direction, resulting in a lower flow resistance for the liquid passing through such a band.
  • Measure A) comprises producing the first fiber mat layer as a nonwoven fabric knitted fabric layer.
  • the at least one further layer provided in the measure B) can comprise, for example, a fabric layer, a mesh material layer, a membrane material layer, a gel layer or combinations thereof. With such layers, a support structure is constructed, which has a high stability, in particular in the band longitudinal direction and transversely thereto, but nevertheless allows the passage of liquid.
  • At least one further fiber material layer can be provided which, for example, can be positioned immediately adjacent to the first fiber material layer, that is to say the nonwoven sewing fabric layer.
  • This at least one further fiber material layer can then be positioned or arranged in the layer of the strip to be produced according to the invention such that it provides the surface for receiving the web material to be produced, for example paper. Due to the preferably provided in such a further fiber material layer extension direction of the fibers in the plane defined by this layer plane, ie in the tape longitudinal direction or tape transverse direction or obliquely thereto, a comparatively planar structure is obtained at the passing with the Bahmaterial in contact surface.
  • the invention further relates to the use of a nonwoven stitched fabric layer, preferably nonwoven fabric knitted fabric layer as a fiber material layer in a belt for a machine for producing web material, in particular press felt.
  • the invention further relates to a belt for a machine for the production of web material, in particular a press felt, comprising at least one fibrous material layer formed as a nonwoven sewing fabric layer, preferably nonwoven fabric knitted fabric layer.
  • a press felt comprising at least one fibrous material layer formed as a nonwoven sewing fabric layer, preferably nonwoven fabric knitted fabric layer.
  • a layer 10 providing a support structure is formed as a fabric layer with first fabric yarns 12 extending in a tape longitudinal direction L and second fabric yarns 14 extending in a tape transverse direction Q.
  • first fabric yarns 12 may be the weft yarns and the second fabric yarns 14 may be the warp yarns, or vice versa.
  • a further designed as a scrim layer 16 is provided over the fabric layer 10. This can be positioned directly on the fabric layer 10 and oriented so that their scrim yarns 18 extend substantially in the tape transverse direction Q and thus bring about increased stability in the transverse direction of the tape.
  • the gel layer 16 may be provided in a modular manner, that is to say already with previously gathered fiber yarns 18 in another manner, and positioned on the fabric layer 10 in the production process.
  • first fiber material layer 20 Adjacent to the gel layer 16 is a first fiber material layer 20 intended.
  • a second fiber material layer 24 is arranged over the first fiber material layer 20.
  • These may also be formed fleece or felt-like with fibers 26 which extend primarily in the plane spanned by this further fiber material layer 24, ie in the tape longitudinal direction L or the tape transverse direction Q or obliquely thereto, but substantially not in the thickness direction D.
  • Die Further fiber material layer 24 can then provide on its side facing away from the first fiber material layer 20 side, a surface on which the web material to be produced, so for example, paper, is transported.
  • the layers 10, 16, 20, 24 shown in Fig. 1, after having been stacked on top of each other, may be joined together by needling, for example, so as to achieve firm cohesion without affecting the porous and liquid permeable structure.
  • the first fiber material layer 20 is formed in the inventively produced tape or press felt as nonwoven stitching fabric layer.
  • a nonwoven stitchbonded knit fabric is characterized in that stitches of fiber bundles which lie on at least one side of this layer are formed on a nonwoven layer with fibers extending substantially in the plane spanned by this layer.
  • fiber areas or fiber bundles the extend out of their original and essentially lying in the plane of the nonwoven layer extension out in the thickness direction D or approximately to this.
  • a porous structure is obtained in which a substantial proportion of pores has an extension direction extending in the thickness direction D or approximately at this point.
  • nonwoven fabric knitted fabric layer This facilitates the passage of liquid and thus improves the dewatering characteristics of a belt or press felt formed with such a nonwoven fabric knitted fabric layer.
  • Various nonwoven sewing knits are known.
  • a nonwoven stitchbonded knitted fabric known, for example, by the name Malivlies, the stitches formed on one side of the nonwoven layer are formed in a transverse fiber fleece, ie a fleece in which the main direction of the fibers contained therein lies transversely to the machining direction during the production of the stitches.
  • Another type of nonwoven stitching fabrics are so-called nonwoven patted knits, known for example as Kunit and Multiknit.
  • non-woven polyester knitted fabrics are distinguished by the fact that a longitudinal fiber fleece is used for the production thereof, that is to say a fleece having fibers extending substantially in the direction of production when the pile or mass structure is produced.
  • the nonwoven structure is solidified to form poles through loops of fiber bundles of the nonwoven fabric. These fiber bundles extend in or approximately to the thickness direction of the nonwoven layer.
  • this first fiber material layer in the inner volume region of the band and to cover it with at least one possibly thinner further layer of fiber material.
  • FIG. 1 the layering of different layers shown in FIG. 1 is only an example. Of course, further layers, in particular also further fiber material layers, can be provided. For example, it would also be possible to provide under the fabric layer 10 a fiber material layer which then comes into contact with the rolls which drive or deflect such a strip.

Landscapes

  • Nonwoven Fabrics (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une bande pour une machine à fabriquer du matériau en bande, en particulier du feutre de presse, comprenant les opérations consistant à : A) préparer une première couche de matériau fibreux (20) sous forme d'une couche de non-tissé lié par couture-tricotage, B) préparer au moins une couche additionnelle (10,16, 24), C) positionner la première couche de matériau fibreux (20) et ladite couche additionnelle (10, 16, 24) l'une sur l'autre, D) relier la première couche de matériau fibreux (20) à ladite couche additionnelle (10, 16, 24).
PCT/EP2011/060892 2010-07-29 2011-06-29 Procédé de fabrication d'une bande pour une machine à fabriquer du matériau en bande, en particulier du feutre de presse WO2012013438A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010038622.7 2010-07-29
DE201010038622 DE102010038622A1 (de) 2010-07-29 2010-07-29 Verfahren zur Herstellung eines Bandes für eine Maschine zur Herstellung von Bahnmaterial, insbesondere Pressfilz

Publications (1)

Publication Number Publication Date
WO2012013438A1 true WO2012013438A1 (fr) 2012-02-02

Family

ID=44627587

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/060892 WO2012013438A1 (fr) 2010-07-29 2011-06-29 Procédé de fabrication d'une bande pour une machine à fabriquer du matériau en bande, en particulier du feutre de presse

Country Status (2)

Country Link
DE (1) DE102010038622A1 (fr)
WO (1) WO2012013438A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9315940B2 (en) 2013-04-19 2016-04-19 Astenjohnson, Inc. Seamed press felt including an elastic carrier layer and method of making
US10385510B2 (en) 2016-11-16 2019-08-20 Astenjohnson, Inc. Seamless press felt with intermediate elastic carrier layer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2141282A1 (fr) * 2007-03-30 2010-01-06 Ichikawa Co., Ltd. Feutre de presse pour la fabrication de papier
DE102008043917A1 (de) * 2008-11-20 2010-05-27 Voith Patent Gmbh Pressfilz und Verfahren zu seiner Herstellung
EP2241671A2 (fr) * 2009-04-16 2010-10-20 Voith Patent GmbH Attelage de machine à papier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2141282A1 (fr) * 2007-03-30 2010-01-06 Ichikawa Co., Ltd. Feutre de presse pour la fabrication de papier
DE102008043917A1 (de) * 2008-11-20 2010-05-27 Voith Patent Gmbh Pressfilz und Verfahren zu seiner Herstellung
EP2241671A2 (fr) * 2009-04-16 2010-10-20 Voith Patent GmbH Attelage de machine à papier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9315940B2 (en) 2013-04-19 2016-04-19 Astenjohnson, Inc. Seamed press felt including an elastic carrier layer and method of making
US10385510B2 (en) 2016-11-16 2019-08-20 Astenjohnson, Inc. Seamless press felt with intermediate elastic carrier layer

Also Published As

Publication number Publication date
DE102010038622A1 (de) 2012-02-02

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